Whereas some actresses like Nashville's Hayden Panettiere wear a wig to maintain consistency while filming, Harington, 27, is stuck with his shoulder-length curls. "I'm just not allowed to cut it, and I didn't realize this until recently. I wanted to cut it. I've had long hair for ages and they were like, 'no, no, no, that won't be happening,'" he revealed.

Kit Harington (Jon Snow on HBO's "Game of Thrones") reveals his hair has its own contract.Credit: HBO

As for his character's predicament on the season finale, airing June 15 on HBO at 9 p.m. ET, the How to Train Your Dragon 2 star is dubious of Jon Snow's plan to leave The Wall to have a powwow with his adversary, wilding leader Mance Rayder. "He's in a bit of a spot of bother, isn't he?" he said. "It's not a particularly good plan, really."